A fresh Houthi strike hit Riyadh’s international airport on Sunday, a day after another attack claimed by the Yemeni group killed at least a dozen people and forced authorities to suspend operations at the facility. Saturday’s attack, the deadliest on Saudi soil in more than a decade, was a sharp escalation in the Yemen war, where Riyadh backs the internationally recognised government against the Houthis. The Iran-backed group on Sunday claimed multiple attacks over the past 24 hours, including...